76% (2000)

76% (2009)

79% (2010)

63% (1993)

74% (2004)

73% (2002)

71% (1998)

69% (2001)

77% (1993)

73% (2003)

76% (1994)

73% (1996)

69% (2000)

82% (1999)

34% (2010)

71% (1998)

67% (2000)

77% (2001)

69% (2010)

63% (2004)